diff options
| author | Joanne Koong <joannelkoong@gmail.com> | 2025-09-25 17:25:57 -0700 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-10-20 20:21:25 +0200 |
| commit | 7588469b5ea4b67ece0d725f6c600f0d8791e5cb (patch) | |
| tree | b1fddfe79ce0fe6599ca5e3ca053ff4f519e2414 /fs | |
| parent | 573c14c8218b408b3fe9f6be058f85d0f586cf26 (diff) | |
iomap: move read/readahead bio submission logic into helper function
Move the read/readahead bio submission logic into a separate helper.
This is needed to make iomap read/readahead more generically usable,
especially for filesystems that do not require CONFIG_BLOCK.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Tested-by: syzbot@syzkaller.appspotmail.com
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/iomap/buffered-io.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 7e65075b6345..f8b985bb5a6b 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -367,6 +367,14 @@ struct iomap_readpage_ctx { struct readahead_control *rac; }; +static void iomap_bio_submit_read(struct iomap_readpage_ctx *ctx) +{ + struct bio *bio = ctx->bio; + + if (bio) + submit_bio(bio); +} + static void iomap_bio_read_folio_range(const struct iomap_iter *iter, struct iomap_readpage_ctx *ctx, loff_t pos, size_t plen) { @@ -392,8 +400,7 @@ static void iomap_bio_read_folio_range(const struct iomap_iter *iter, gfp_t orig_gfp = gfp; unsigned int nr_vecs = DIV_ROUND_UP(length, PAGE_SIZE); - if (ctx->bio) - submit_bio(ctx->bio); + iomap_bio_submit_read(ctx); if (ctx->rac) /* same as readahead_gfp_mask */ gfp |= __GFP_NORETRY | __GFP_NOWARN; @@ -488,13 +495,10 @@ int iomap_read_folio(struct folio *folio, const struct iomap_ops *ops) while ((ret = iomap_iter(&iter, ops)) > 0) iter.status = iomap_read_folio_iter(&iter, &ctx); - if (ctx.bio) { - submit_bio(ctx.bio); - WARN_ON_ONCE(!ctx.cur_folio_in_bio); - } else { - WARN_ON_ONCE(ctx.cur_folio_in_bio); + iomap_bio_submit_read(&ctx); + + if (!ctx.cur_folio_in_bio) folio_unlock(folio); - } /* * Just like mpage_readahead and block_read_full_folio, we always @@ -560,12 +564,10 @@ void iomap_readahead(struct readahead_control *rac, const struct iomap_ops *ops) while (iomap_iter(&iter, ops) > 0) iter.status = iomap_readahead_iter(&iter, &ctx); - if (ctx.bio) - submit_bio(ctx.bio); - if (ctx.cur_folio) { - if (!ctx.cur_folio_in_bio) - folio_unlock(ctx.cur_folio); - } + iomap_bio_submit_read(&ctx); + + if (ctx.cur_folio && !ctx.cur_folio_in_bio) + folio_unlock(ctx.cur_folio); } EXPORT_SYMBOL_GPL(iomap_readahead); |